whats up with these? i hear you can save a lot of money on your bills but are they really environmentally friendly???? should i just go out and buy some now and toss my old ones or what??? someone told me indascent lights are a thing of the past but im not sure i believe them. they also tryed to tell me something about flat screen tvs and monitors but i wasnt really paying good attention and i dont really trust this person.. anyone know whats up with these?